A:
Positive:
1 x 72058077 x 102940117 x 42387119 x 379253119 x 60553133 x 54179323 x 223092261 x 3187
Negative:
-1 x -7205807-7 x -1029401-17 x -423871-19 x -379253-119 x -60553-133 x -54179-323 x -22309-2261 x -3187
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 7,205,807, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 7,205,807 | |
| -1 | -7,205,807 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,205,807.
Example:
1 x 7,205,807 = 7,205,807
and
-1 x -7,205,807 = 7,205,807
Notice both answers equal 7,205,807
With that explanation out of the way, let's continue. Next, we take the number 7,205,807 and divide it by 2:
7,205,807 ÷ 2 = 3,602,903.5
If the quotient is a whole number, then 2 and 3,602,903.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 7,205,807 | |
| -1 | -7,205,807 |
Now, we try dividing 7,205,807 by 3:
7,205,807 ÷ 3 = 2,401,935.6667
If the quotient is a whole number, then 3 and 2,401,935.6667 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 7,205,807 | |
| -1 | -7,205,807 |
Let's try dividing by 4:
7,205,807 ÷ 4 = 1,801,451.75
If the quotient is a whole number, then 4 and 1,801,451.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 7,205,807 | |
| -1 | 7,205,807 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 19 | 119 | 133 | 323 | 2,261 | 3,187 | 22,309 | 54,179 | 60,553 | 379,253 | 423,871 | 1,029,401 | 7,205,807 |
| -1 | -7 | -17 | -19 | -119 | -133 | -323 | -2,261 | -3,187 | -22,309 | -54,179 | -60,553 | -379,253 | -423,871 | -1,029,401 | -7,205,807 |
Here are some more numbers to try:
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